The side. You can see the exhaust ports behind the cockpit.
Here's the Airacobra Dogfithting over the north sea. The pilot apparently got a good firing angle on the bandit.
This plane was a difficult build. It took forever to find a good design aft of the cockpit. I think it turned out pretty good
The Bell P-39 Airacobra was one of the principal American fighter aircraft in service at the start of World War II. Although its mid-engine placement was innovative, the P-39 design was handicapped by the lack of an efficient turbo-supercharger, limiting it to low-altitude work, although the type was used with great success by the Soviet Air Force. In the P-39, Soviet pilots scored the highest number of individual kills attributed to any U.S. fighter type.
Length: 30 ft 2 in (9.2 m)
Wingspan: 34 ft 0 in (10.4 m)
Height: 12 ft 5 in (3.8 m)
Wing area: 213 ft² (19.8 m²)
Empty weight: 5,347 lb (2,425 kg)
Loaded weight: 7,379 lb (3,347 kg)
Max takeoff weight: 8,400 lb (3,800 kg)
Powerplant: 1× Allison V-1710-85 liquid-cooled V-12, 1,200 hp (895 kW)
Maximum speed: 376 mph; (605 km/h; Redline dive speed=525 mph.)
Range: 1,098 miles (1,770 km)
Service ceiling 35,000 ft (10,700 m)
Rate of climb: 3,750 ft/min (19 m/s; 15,000'/ 4.5 min at 160 mph (260 km/h).)
Wing loading: 34.6 lb/ft² (169 kg/m²)
Power/mass: 0.16 hp/lb (0.27 kW/kg)
1x 37 mm M4 cannon firing through the propeller hub at the rate of 140 rpm with 30 rounds of HE ammo.
4 x .50 cal (12.7 mm) machine guns. Rate of fire was 750 rpm x 1 gun in each wing, only 300 rpm each x 2 guns synchronized in the cowl. Ammo: 200 rounds per nose-gun, 300 per wing-pod.
Up to 500 lb (230 kg) of bombs externally